GB/T 18820-2023General principles of drafting norm of water intake for industry (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 18820-2011 "General Rules for Preparing Water Intake Quotas for Products of Industrial Enterprises" and is consistent with GB/T 18820-2011.

In addition to structural adjustments and editorial changes, the main technical changes are as follows.

---Added normative reference document GB/T 21543 (see Chapter 3);

---Changed terms and definitions (see Chapter 3, Chapter 3 of the 2011 edition);

---Added the content of water quota standards (see Chapter 4);

---Changed the principles for preparing water quota standards (see 5.2, Chapter 4 of the 2011 edition);

---Added normative reference document GB/T 24789 (see 6.5).

1 Scope

This document stipulates the content, preparation basis and principles, preparation procedures and calculation formulas of industrial water quotas.

This document is applicable to the preparation of industrial water quotas.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 4754 National Economic Industry Classification

GB/T 12452 General principles for water balance testing

GB/T 21534 Water conservation terminology

GB/T 24789 General rules for the equipment and management of water measuring instruments for water use units

3 Terms and definitions

The terms and definitions defined in GB/T 21534 and the following apply to this document.

4 Contents of water consumption quotas

In addition to the general content that should be included, industrial water quotas should also include.

---Terms and definitions;

---Calculation range;

---Calculation formula;

---General value of water quota;